Weather Alerts for Colorado
1. Air Quality Alert for: Jefferson, CO; Weld, CO; Adams, CO; Larimer, CO; Arapahoe, CO; Douglas, CO; Boulder, CO; Broomfield, CO; Denver, CO
2. Heat Advisory for: Canon City Vicinity/Eastern Fremont County; Northern El Paso County/Monument Ridge/Rampart Range Below 7500 Ft; Colorado Springs Vicinity/Southern El Paso County/Rampart Range Below 7400 Ft; Pueblo Vicinity/Pueblo County Below 6300 Feet
3. Heat Advisory for: Crowley County; La Junta Vicinity/Otero County; Western Kiowa County; Eastern Kiowa County; Las Animas Vicinity/Bent County; Lamar Vicinity/Prowers County
4. Heat Advisory for: Yuma County; Kit Carson County; Cheyenne; Rawlins; Decatur; Norton; Sherman; Sheridan; Graham; Dundy; Hitchcock; Red Willow
5. Red Flag Warning for: Colorado River Headwaters
6. Red Flag Warning for: Colorado River Headwaters
7. Red Flag Warning for: Little Snake; White River; Southwest Colorado Lower Forecast Area; Paradox Valley; North Fork; Southwest Colorado Upper West Forecast Area; Eastern Ashley National Forest; Eastern Uintah Basin; Book Cliffs; Colorado River Basin; Southeast Utah
8. Red Flag Warning for: Little Snake; White River; Southwest Colorado Lower Forecast Area; Paradox Valley; North Fork; Southwest Colorado Upper West Forecast Area; Eastern Ashley National Forest; Eastern Uintah Basin; Book Cliffs; Colorado River Basin; Southeast Utah
9. Red Flag Warning for: Little Snake; White River; Southwest Colorado Lower Forecast Area; Paradox Valley; North Fork; Southwest Colorado Upper West Forecast Area; Eastern Ashley National Forest; Eastern Uintah Basin; Book Cliffs; Colorado River Basin; Southeast Utah
10. Red Flag Warning for: Lower Colorado River
11. Red Flag Warning for: Lower Colorado River
12. Red Flag Warning for: Lower Colorado River
13. Red Flag Warning for: Northern San Juan; Gunnison Basin
14. Red Flag Warning for: Northern San Juan; Gunnison Basin
15. Red Flag Warning for: Southwest Colorado Upper East Forecast Area
16. Red Flag Warning for: Southwest Colorado Upper East Forecast Area
17. Red Flag Warning for: Upper Arkansas River Valley Including Lake County and Chaffee County; Eastern San Juan Mountains and La Garita Mountains Including Wolf Creek Pass and Creede
18. Red Flag Warning for: Upper Arkansas River Valley Including Lake County and Chaffee County; Eastern San Juan Mountains and La Garita Mountains Including Wolf Creek Pass and Creede
19. Wind Advisory for: Central Gunnison and Uncompahgre River Basin; Paradox Valley/Lower Dolores River; Four Corners/Upper Dolores River
20. Wind Advisory for: Grand Valley; Debeque to Silt Corridor; Central Colorado River Basin
21. Wind Advisory for: Lower Yampa River Basin; Central Yampa River Basin; Eastern Uinta Basin
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Current U.S. National Radar--Current
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North America Water Vapor (Moisture)
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Weather Topic: What are Shelf Clouds?
Home - Education - Cloud Types - Shelf Clouds
Next Topic: Sleet
A shelf cloud is similar to a wall cloud, but forms at the front
of a storm cloud, instead of at the rear, where wall clouds form.
A shelf cloud is caused by a series of events set into motion by the advancing
storm; first, cool air settles along the ground where precipitation has just fallen.
As the cool air is brought in, the warmer air is displaced, and rises above it,
because it is less dense. When the warmer air reaches the bottom of the storm cloud,
it begins to cool again, and the resulting condensation is a visible shelf cloud.
Next Topic: Sleet
Weather Topic: What is Snow?
Home - Education - Precipitation - Snow
Next Topic: Stratocumulus Clouds
Snow is precipitation taking the form of ice crystals. Each ice crystal, or snowflake,
has unique characteristics, but all of them grow in a hexagonal structure.
Snowfall can last for sustained periods of time and result in significant buildup
of snow on the ground.
On the earth's surface, snow starts out light and powdery, but as it begins to melt
it tends to become more granular, producing small bits of ice which have the consistency of
sand. After several cycles of melting and freezing, snow can become very dense
and ice-like, commonly known as snow pack.
Next Topic: Stratocumulus Clouds
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